Provide custom-prompt-customize-unsaved-options.

* doc/emacs/custom.texi (Saving Customizations): Mention
`custom-prompt-customize-unsaved-options'.

* etc/NEWS: Mention `custom-prompt-customize-unsaved-options'.

* etc/TODO: Remove its entry.

* lisp/cus-edit.el (custom-prompt-customize-unsaved-options): Add a
mechanism for prompting user about unsaved customizations.
(Bug#19328)

2 files changed, 15 insertions, 0 deletions

diff --git a/doc/emacs/ChangeLog b/doc/emacs/ChangeLog
index 3ed8c1309bd..cd46d9fc474 100644
--- a/doc/emacs/ChangeLog
+++ b/doc/emacs/ChangeLog
@@ -1,3 +1,8 @@
+2014-12-14  Cameron Desautels  <camdez@gmail.com>
+
+        * custom.texi (Saving Customizations): Mention
+        `custom-prompt-customize-unsaved-options'.
+
 2014-12-08  Lars Magne Ingebrigtsen  <larsi@gnus.org>
 
         * misc.texi (Network Security): Mention the new protocol-level
diff --git a/doc/emacs/custom.texi b/doc/emacs/custom.texi
index 0d0013f5ace..6c392cbc70d 100644
--- a/doc/emacs/custom.texi
+++ b/doc/emacs/custom.texi
@@ -405,6 +405,16 @@ customizations in your initialization file.  This is because saving
 customizations from such a session would wipe out all the other
 customizations you might have on your initialization file.
 
+  Please note that any customizations you have not chosen to save for
+future sessions will be lost when you terminate Emacs.  If you'd like
+to be prompted about unsaved customizations at termination time, add
+the following to your initialization file:
+
+@example
+(add-hook 'kill-emacs-query-functions
+          'custom-prompt-customize-unsaved-options)
+@end example
+
 @node Face Customization
 @subsection Customizing Faces
 @cindex customizing faces